Visualize current repository is clean or not clean

zsh_weather.sh

## show git branch at right prompt
autoload -Uz vcs_info
zstyle ':vcs_info:*' formats '[%b]'
zstyle ':vcs_info:*' actionformats '(%s)-[%b|%a]'
precmd () {
    psvar=()
    LANG=en_US.UTF-8 vcs_info
    is_fine=0

    [[ -n "$vcs_info_msg_0_" ]] && psvar[1]="$vcs_info_msg_0_"

    if git rev-parse --is-inside-work-tree >/dev/null 2>&1
    then
        if test -z "$(git status --porcelain)"
        then
            is_fine=1
            psvar[2]='☀ '
        else
            psvar[2]='☂ '
        fi

        stashes=$(git stash list 2>/dev/null | wc -l)
        if [ ${stashes} -eq 0 ]
        then
            psvar[3]+=""
        else
            psvar[3]+="@${stashes// /}"
        fi
    fi

    if [ $is_fine == 1 ]
    then
        RPROMPT=%B"%1(v|%F{magenta}%1v%f%F{red}%2v%f%F{yellow}%3v%f|)"%b${_DIRPART}
    else
        RPROMPT=%B"%1(v|%F{magenta}%1v%f%F{cyan}%2v%f%F{yellow}%3v%f|)"%b${_DIRPART}
    fi
}

_DIRPART=%B%{$fg[green]%}'[%(5~,%-2~/.../%2~,%~)]'%{$reset_color%}%b
RPROMPT=%B"%1(v|%F{magenta}%1v%f%2v%f%F{yellow}%3v%f|)"%b${_DIRPART}